Improved vegetable coloeiijg-mattee



gotten gtatns igttitltt @ffinr.

Letters Patent No. 76,107, dated Zilareh 31, 1868.

IMPROVED VEGETABLE COLORING-MATTER.

th s some ttitttth tr iltlljtfit Zttitctt new tint mating trot at the saint.

TO ALL WHOM IT MAY CONCERN:

Be it known that I, Du CHARLES SEIDEL, of the city, county, and State of New Yorlr, have invented a new and useful Indelible Vegetable Fluid; and do hereby declare that the following is a full and exact description thereof, the nature of which consists in a new combination of" matter, of which the cashew-nut (or auacardia nut, as sometimes so called,) forms the basis, and when dissolved by aid of essential oils, such as oil of turpentine, or its equivalent, as a menstruum solvent, or by benzine, chloroform, or bisulphuret of carbon, produccs ,an indelible vegetable fiuid for writing or printing on clothes, paper, or parchment, and for cancelling revenue-stamps, and'like purposes, which cannot be defaced or destroyed by the counteraction of acids or reagents, as the fluid becomes a component part of the material on which it is used.

To enable others skilled in the art to make and use myinvcntion, I will further explain its properties and manufacture.

It is wellknown that the cashewmut, during the season of vegetation, produces'a pigment or dark color, which is again lost after the season of vegetation is over, rendering the nut worthless, (so far as extracting the color is concerned,) and'in reproducing this pigment, by a proper menstruum solvent, I have obtained the desideratum, and a basis for the aforesaid fluid.

Theeashew-nuts I place in a suitable vessel, break them open, and free them from the pith or olcaginous interior. I nextplace the nuts in a mortar, and reduce-the same to powder, and, with the nuts so prepared, I mix 'oil of turpentine, or itsequivalent, as a mcnstruum'solvent, and I remove all foreign mntterfrem the fluid by filtration, (and reduce the same to an extract, as may be dcsired,) the color and consistency varying with the proportions of the ingredients, and the coloring character derived from the cashew-nut; and thus I produce an indelible vegetable fluid fornvriting or printing on clothes, paper, or parchment, and for cancelling revenuestamps, that cannot be destroyed by alkali or reagents.

I would remark that the paper or clothes to be written on require no sizing or other preparation than an ordinary smooth surface, and, for use of the fluid, a clean steel pen; but, shouldit be desired to give the writing or printing a very black color, a little lanip blaek maybe added to the consistency, and, although when used on cloth, may become lighter on washing, it will beagnin restored to its original shade by the use of alkali, either in soap while washing, in solution, or as a component part ofthe mixture previous to use.

Having described my invention, what I claim, and desire to secure by Letters Patent, is'- An indelible vegetable fluid, having for its basis the pigment ot the casheu'mut, as a new combination of matter, substantially as and for the purposes described and set forth.

In testimony whereof, I have-hereunto set my signature. I

DR. OHS. SEIDEL.

Witnesses:

A. ONEILL, I. F. Ronnn'rs. 

